Ela galley



ELAL GALLEY, 0Fl FRANKLIN; "NEW HAMrsEmE.

. .Letters Patent No. 74,749, elated Febr'litaryr25, 1868*.

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TO ALL PERSONS TO WHOM THESE PRESENTS MAY COME:4 Y Be itknown that I,ELA GALLEY, of. Franklin, in the county of Merrimack, and Stateof NewHampshire, have invented a new and useful Improvement in` Applyinga'Circular Saur to itsl Shaft; and` do hereby 4declare the same to befully described in the following specification, and' represented in theaccompanying drawings,

of VWhich- Figure 1 is a longitudinal section of a saw nml itss'naft, asconnected in accordance with my invention. Figure 2 is an end view ofthe shaft with the saw applied thereto. w I The object of mymprovementis to enable, the saw to be either readily removed from it orreaflily Afired upon. the-shaft or arbor. i f

For this purpose [.forin the shafts A of the saw B with an annularshoulder, a, for the saw to, rest against when encompassing the-saidshaft. I also aix to the outer face of the saw, by m'eans of screws b b,a screwnut, C, adapted to #double-threaded screw, c, which I cut on thatpart of the arbor which projects from thc shoulder'a, goes through thesaw, and extends beyond When the-saw is close against the shoulder a, itwill cover the heads of the screws 6 b, `and thus estop `such screwsfrom working loosely in the nut. By means of the nut andzitsfscrvvs bsaws of diiferent sizes maybe readily applied to the shaft without thenecessity ol' having a separate nut for every saw.

Iam aware that it is not new to conneeta chuck or other article withV:tn arbor by means of" a screwland shoulder on such arbor; therefore Imakeino claim thereto; but l What I claim as myfinvention, isl n Y Thearrangement of the separate nut'. C and its conningjscrews 6,' shaft A,the lx'nal'e Ascrew c, and the shoulder d, applied to such shaft inthemanncr and for the purpose substantially as speciied.

ELA CALLElY. 4

Witnesses:

R. H. EDDY, AF. P. HALE, Jr.

